Here we are bending the side skin tab. DON’T DO IT THIS WAY. Having the angle orientated like I have will tend to create a bend or curve along the rivet line. Look at the pictures at the end on the fuselage construction plans and do it that way. Doing it the way the plans show will avoid any curve or bend where the side and bottom skin overlap. Having any bend in the overlap will prevent the two skins from sitting flush.